单选题 Questions 19 to 21 are based on the passage you have just heard.
【正确答案】 C
【答案解析】[听力原文]
If you"re like a lot of people on the internet, you"re probably tired of people, governments, and disembodied voices telling you what to do. And to be fair, a lot of the things you shouldn"t put in your refrigerator are pretty self-evident.
There are some foods that are actively made worse by refrigeration. These are the items you should absolutely keep away from cold.
The first one is onions. Here"s a weird one. You don"t have to refrigerate onions, but you do need to keep them physically separated from the potatoes. Spuds emit moisture and gases that will make your onions rot. Your best bet is to keep onions in the mesh bag they came in—they like air circulation.
The next one is garlic. Again, air circulation is key. Garlic bulbs will keep for two months without refrigeration, and if you keep them out of the damp air of the fridge you"ll avoid making all your other nearby produce smell like garlic. Some even say that refrigeration will make garlic sprout prematurely.
Then are the stone fruits. Peaches, apricots, nectarines, plums, cherries, and so on should be ripened at room temperature, stem-end down. Only after the fruits start softening slightly to the touch and begin to smell sweet should they be moved to the refrigerator. Shelf life is three to five days after that.
And the last one is honey. Honey is one of the world"s earliest preservatives. It has a practically indefinite shelf life, and we"ve heard tales of archaeologists uncovering ancient Egyptian tombs with edible honey inside. Don"t refrigerate honey. It"ll crystallize, and you"ll have to squeeze that stupid teddy bear even harder to get it out.

Which one is right according to the passage?

[解析] 综合理解题。短文中提到有些食物是不适合放到冰箱保存的,如洋葱。故选C。
【正确答案】 A
【答案解析】[听力原文]
What kind of food can be put in refrigerators according to the passage?

[解析] 细节理解题。短文中举例说明不适合放到冰箱保存的食物有洋葱,大蒜,核果和蜂蜜,只有A选项的鸡蛋是文中没有提到的。故选A。
【正确答案】 D
【答案解析】[听力原文]
What is the passage about?

[解析] 综合理解题。短文中主要讲到并不是所有的食物都适合放到冰箱保存,并详细介绍几种不适合放冰箱的食物。故选D。